• Piscine Anatomy: The sea spawn has one or more of the following attack options, provided it has the appropriate anatomy:
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 4 (1d4+2) piercing damage.
Poison Quills. Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 3 (1d6) poison damage, and the target must succeed on a DC 12 Constitution saving throw or be poisoned for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
Tentacle. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 5 (1d6+2) bludgeoning damage, and the target is grappled (escape DC 12) if it is a Medium or smaller creature. Until this grapple ends, the sea spawn can't use this tentacle on another target.